You can create price alert here, copy coupons and view price history. You probably want to know what is the best price?
Color White, Material ABC+PC, Impur 5V ~ 1050mA, Model S2 Electric Toothbrush Sterilizer, Enviroment -5 ~ 45°C / 30 ~ 90% RH
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($30.82): BG1efeb0
2. ($31.15): Terence
3. ($31.15): 2203ActiesNL
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGS219, BGMIKATUS2, BGHome15%, BGHOMEA15%, BGZASAPW92, BGBTJU20219, BGAFF10OFF, BGCuponation10, 13f142, BG10OFFAFF, BGAP2203, BGwhielabel, BGJUN087, BG10OFFAFF1, BANGGOODSD, BGBF20off2
(probably won’t work, but you can try them out)
Price history and price alert
Check out price history chart (for all/most countries) for MIKATU S2 PIR Toothbrush Sterilizer Enchanced.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).